Electric-lamp socket



Oct. 14, 1930. v A. H. NERO 1,778,684

ELECTRIC LAMP SOCKET Filed March so, 1925 Ill INVENTOR H/PVIU fl. NEROATTORNEYS Patented a. 14, 1930' v UNITED STATES PA NT o'rriic'e 7 AnvrnH. NEBOJOF wns'r nan'rroan, comwnc'rxcur, ASSIGNOR, BY um: ASSIGN-HENTS, TO THE ARROW-KART 6'0 HEGEMAN ELECTRIC OF marrow,

CONNECTICUT, A CORPORATION OF CONNECT T e socnn'r Application filedlarch 30,(1925. Serial No. 19,524.

\ My invention relates to electric lamp sockets, and particularly to asocket of the candle type:

The object of my invention is to PIOVldG arugged socket structure andsupport which is economically manufactured and at the same timeserviceable and eflicient in operation.

In the accompanying drawings- Fi 1 is a broken side elevation of asocket in w ich my invention is embodied in one form; 1

Fig. 2 is an enlarged vertical section on the line 2--2, 1;

Fig. 3 is a dropped perspective of the socket parts; and

Fig. dis a section on the line 4-4, Fig; 2. While the specific object ofmy inventlon is to provide a structure particularly adapted forinstallations of the candle socket type,

certain features of the construction are appli-. cable to sockets ofother types. The invention is therefore not limited to candle socketsand it will be obvious to any one skilled in the art that the details ofshape and form illustrated may be variously modified without departingfrom my invention.

As shown, owever, the present socket comprises an insulating button orbody 5 centrally pierced by anaxial hole 6 adapted to receive a tubularrivet 7 by which the various current carrying elements of the socket aresecured upon the button. The peripheryofthe button is cutatdiametrically opposite points by channels 8 and 9, referablyshouldered to form seats 10 for 51c wire terminal plates 11 and 12. Tohold the wire ends, the plates carry binding screws 13 and-'14, theinner ends of which enter the narrow channels 15 bounded by the sidewalls of the seats 10 against which the terminal plates rest.

The terminal plate 11 is integral with an offset yoke 16 which overliesthe base flanges 17 of the screw shell side contact 18 at one end of theinsulating button 5. As will be noted from Fig. 4, the arms of the yokeclosely embrace the curved sides of the upstanding boss 19 whichprojects from at one end of the button, and thus prevents its escape.Spaced from the yoke 16 by the insulating washer 20 is the offset centercontact 21 integral with 17 of the screw shell.

the terminal plate- 12 which passes freely through an aperture 22 in theside of the shell contact 18 from which it is thus spaced.

. In order to mount the socket on the usual pipe conduit 23 I provide abracket-like sup.- port or hickey comprising a nipple 24 tapped to screwupon the pipe end and having integral therewith a pair of ofl'set arms25 and 26, the upper reaches of which are received in lateral channels27 formed in opposite sides of the button 5 on an axis substantially atright angles to the channels 8 and 9 for the reception of the'wireterminal plates. The upper ends of the bracket arms 25 and 26 areotfset'toward each other and are provided with heads 28 received indepressed seats in the upper face of the button 5. To insulate the,bracket from the screw shell contact 18,

- an insulating washer 29 is interposed between the button 5. the hole32 in the washer 20,

and the hole 33 in the base of the center contact 20. and is spun overthe latter to firmly secure the parts together.

Surrounding the electrical conductors of the socket is an insulatingcasing 34 which encloses the screw shell 18 and the lateral wireterminals 11 and 12 and thus prevents possible contact with theornamental candle tube (not shown) which may be of metal. The casing 34may he slipped freely down over the screw shell and bbdy of the socket,being sup ported at its lower edge upon bosses 35 and 36 struckoutwardly'from the arms 25 and 26 of the carrying bracket at appropriatepoints.

The carrying bracket is preferably formed from a sheet metal blank whichis drawn to form a nipple 24 andshaped to form the arms and 26. Thenipple is preferably pierced and tapped at 37 to accommodate a set screw(not shown). The formation of the hickey in this manner from a sheetmetal blank is a matter of considerable economy and affords a moresatisfactory nipplesince the usual staking and soldering operation bywhich the arms are usually secured to the machine screw nippleare'avoided-as well as the danger of injury to the threads.

All of the parts are simple and rugged, readily formed and assembledupon the button, while the single holding rivet performs in a singleoperation what is customarily accomplished by means of a group ofholding screws. The latter not only weaken the body of the button, butadd to the cost of construction, and assembly. While the rivet is of adiameter sufiicient to accommodate a wire passed through the conduit andthus facilitates wiring. of the socket, a solidrivet or a tubular rivetof less diameter mav be used if this advantage is not desired. When theinsulating button is of molded composition, the head of the rivet may bemolded thereinand as above stated, if the central hole in the button isnot desired, the rivet may be of less diameter or not tubular.

,Various modifications in form and construction will readily occur tothose skilled in the art, without departing from what I claimas myinvention.

I claim V 1. An electric lamp socket comprising an insulating body, lampreceptacle contacts, wire terminals, a supporting bracket, all

having engaging elements overlving one end of said bodv. insulatingwashersspacing certain of saidmembers apart, and unitary means common tosaid parts for securing the same in assembled position on theinsulating.

body. 7 2. An electric lamp socket comprising an insulating body, ascrew shell arranged at on'e end of thebody, a supporting bracket havingengaging means overlying said end of the body beneath the screw shell,insulat1on spacing said screw shell from the engaging means of thebracket, and means for securing said" screw shell on the body and thusto confine said engaging .means of the bracket. I

v 3. An electric lamp socket comprising an insulating body, screw shelland center lamp 7 contacts arranged at one end of said body, asupporting bracket comprising a pair of bracket arms embracing the bodyand having oflset lugs overlying said end of the body, an insulatingcasing surrounding the screw shell, and outwardly projecting lugs onsaid bracket arms against which one end of the casing freely rests forsupport.

terminalshaving binding means arranged at the sides of the body andhaving extensions overlying said end of the body, and a single securingmeans common to said receptacle contacts and wire terminals, for holdingthe same in assembled position on the body.

5. An electric lamp socket comprising an insulating button peripherallyrecessed to afford channels extending in a direction substantiallyparallel with the axis of the button, lamp receptacle contacts arrangedat one end of said button, associated wire terminal members extendinginto certain of said lateral channels, a supporting bracket havingmembers arranged in certain other of said lateral channels, and meanscommon to said members for securing the same in assembled position onthe insulating button.

6. An electric lamp socket having an in-. sulating, body, lampreceptacle contacts arranged at one end of said body, associated vwireterminals having portions overlying trally pierced insulating body, lampreceptacle contacts, associated wire terminals, and a supportingbracket, all having members arranged at one end of said body, and atubular member substantially concentric with the hole in the insulatingbody and projecting beyond said end thereof and serving t'o'E'hold allof said parts in assembled positionthereon.

,8. An electric lamp socket having an insulating body, lamp receptaclecontacts arranged at one end of said body, associated wire terminalshaving portions overlying said end of the insulating body, a supportingbracket having an element overlying said end of the body, and meanscommon to said parts for holding the same in as- 4. An electric lampsocket comprising an insulating body, lamp receptacle contacts arrangedat one end thereof, associated wire

